I bought these Altra zero-drop shoes used because I wanted to try them out. Size: US: 9 | UK: 8 | EUR: 42.5 (approx. 27cm) They show signs of wear and tear, but I think they're still in good enough condition to use. I liked the zero-drop feature, but my feet are quite narrow, and they felt a little loose, so I'm reluctantly selling them. Altra shoes are expensive and not widely available, so why not give these a try?